Fix lofargrid bug

Jakob Maljaarsrequested to merge
fix-lofargrid-bug into master

Three updates:

  • Fixes a bug (or at least an incompleteness) in the LOFARGrid::CalculateStation method. The reason this wouldn't be harmful is that CalcThread would repair for this bug (if statement starting on line 42 in lofargrid.cc
  • Updates the formatting script and pins it to clang-format==9.0.0 to fix the clang-format stage (@tol: this is currently causing your pipeline failures, so nothing to worry about)

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